Vehicle tire



Dec. 25, 1928. 1,696,707

D. N. BooTH VEHICLE TIRE Filed Sept. 5, 1925 3 'Sheets-Sheet 1 D. N. BooTH VEHICLE TIRE Filed sepi. 5, 1925 Sheets-sheet 2 Dec. 25 1928.

D( N. BOOTH VEHICLE TIRE -Irlw Filed Sept. 5, 1925 j Snowdon Patented Dec. 25, 1928.

UNITED STATES DAVID N. BOOTH, Ol'll'v NEW YORK, N. 'Y'.

VEHICLE TIRE.

Application led Septeniber 5, 1925. Serial No. 54,668.

My present invention relates to an improvement in vehicle tires and more particularly to resilient tires adapted for use in pleasure cars, trucks and similar motor vehicles. As commonly constructed at the present time the tires employed for this purpose usually in-A clude an inner tube and a shoe which by various devices are demountably or otherwise fixed on the felly of the wheel of the vehicle. Tires of this type have also been made of a size and with the walls of the-shoe constructed in a predetermined manner to carry a relatively low pressure and to provide for an increased resiliency such for example as the socalled balloon tires of more or less recent date. I am also aware that heretofore armor devices of various sti'uctures have been applied to vehicle tires in attempts to make them puncture proof.

In the practical use of vehicle tires it is necessary when a tire becomes punctured to stop the vehicle and change the tire, because as it isy well understood, running on a flat tire not only ruins the shoe and the tube, but also tends to unduly strain the operating parts of the vehicle. Stopping to change a shoe is not only a means of inconvenience but oftentimes causes delays which are exasperating in the extreme. The object of my invention is to overcome these inconveniences and didiculties, making it possible to use a tire which may be made substantially puncture proof, and which if deflated because of a faulty valve or otherwise, the vehicle may be run sufliciently far to reach a garage or repair station without material inJury to the tire or detriment to the operating parts of the vehicle. To vthis end in carrying out the invention, the tire made in accordance therewith preferably comprises a plurality of tubes and a shoe surrounding Y the same. The tubes are so arranged within the shoe as to be suitably spaced from each other and ladapted to be inflated to various pressures, the ressure for example in the innermost tube being appreciably greater than the pressure in the outermost tube, whereby as will be understood, there will be a materially increased resiliency in the tire, and `should the outermost tube become punctured the shoe will be carried by the inner tube or tubes until the necessar repairsy may be made. The invention also inc udes the provision of an armor for making the tire substantially puncture proof, the armor being associated in any one of a number of manners, some of which will be hereinafter more` particularl described in conjunction with an armor whic 1 I now believe is the preferred form thereof.

, In. the drawing Figure l is an elevation and partial section of a vehicle tire including the wheel made in accordance with my invention.

- Fig. 2 is a diagrammatic elevation illustrating the use of the improved tire,

FFig. 3 is an enlarged section on line 3-3,

Fig. 4 is also a section showing another form ofthe invention.

Fig. 5 is an elevation and partial section illustrating the construction of the tire as shown in Figs. 1 and 3.

Fig. 6 is a similar view showing the conf struction of the tire as 'illustrated in Fig. 7.

Fig. 7 is 'a partial section illustrating the form of tire illustrated in Fig. 4.'

Fig. 8 isia section' showing another manner in which the armor ma be applied to a tire constructed as shown in Fig. 3.

Fig. 9 is a section showin the use of an armor substantially midway etween the inner and outer tubes of a tire as illustrated in Fig. 3.

Fig. 10 is a section showing the use of an armor applied to the inner tube of a tire of the construction shown in Fig; 3.

Fig. 11 is a partial plan illustrating a form of armor which may be employed in carrying out my invention.

Fig. 12 is a section on line 153-12, Fig. 11.

Fig. 13 is a section on line 13--13, F1 11.v

Fig. 14 is a section illustrating a slightly modified form of armor, and c one manner in which the armor may be applied to Fig. 15 is a section illustrating a further X modified form of armor.

` 'Referring to the drawings and particularly to Figs. 1, 2 and 3, the vehicle tire made inaccordance with my invention is adapted to form part of a vehicle wheel constructed tov include a hub 10, spokes 11 and a felly 12.

It will be understood however, that a diskA type or other form of wheel may be employed to equal advantage and with the same facility. It will also be understood that irrespective of the type of wheel the same may include any style of rim to which the tire is attached, as for example a demountable rim 13 which 1s secured to the felly in any desired manner. The tire made in accordance with m invention as illustrated for example in 1 1, 3 and 5, preferably includes an inner tu i4 made of rubber or other similar and equally Hexible material. ylhe tire also includes anouter tube which is also made of rubber or other similar Hexible material and adapted to tit within a shoe member 16 constructed in y the usual or any desired manner. As illustrated the inner tube 14 is provided 1with ,a

' the air or other gas contained therein. 'lhe I shoe as illustrated may be provided with the usual beads 18 and i9 adapted to engagein recesses 20 and, 21 provided tor this purpose in the rim, and the rim may be provided with laterally extending anges 22 and 23 against which the outer adjacent surfaces ot',y the shoe contact when in use. These flanges' may be ot approximately the extent indicated or any other extent which maybe found necessary or desirable.

The inner tube ,14 provides for an air or gas space 24, and between the inner tube 14 and its cover 17 and the outer tube 15, there is `an annular space 25alsoadapted to receive and contain air or other gas under pressure. rlhe air or gas is. admitted to the space 24 by a valve 26 and to the annular space 25 by a valve 27. 'lhese valves may be et the usual construction and as illustrated, the stem 28 for example of the valve 26 passes through the rim and is secured in the usual or any manner in both the inner tube 14 and the outer tube 15. As shown, there is a lock nut 29 adapted to turn down on the threaded end of the stem against the'inner surface of the tube 15, and a nut 30-adapted topbe turned down on the reduced screw threaded endot the stem against the inner surface of the tube i4. ln this form of tire the inner tube 14 may be inflated to oontainfa predetermined pressure, for example 70 to 75 pounds, and the outer tube inatedby passing air or other gasfinte the space 25 at a reduced pressure, tor example 50 to 60 pounds, so that the pressure in the annular space isy preferably less than the pressure in the inner tube. This as will be understood provides for a greater resiliency of the shoe than would otherwise 'be obtained, that is the shoe .is more resilient than if the pressures within the same were higher, and for example equal to the pressure in the inner tube. ln the use 'of the .tire as shown in Fig. 2, the bearing surface of the tread on' the surface of the road is materially increased, providing for a greater friction between the tire and the road surface tending to prevent skidding and increasing the driv-l ing (power due to the greater purchase on the roa ing edect in advancel of thatportion of the .tread which is in contact with the road. lt

will also be understood that if for any reasonl This act-ion tends to provide abulg,

Lesage? the outer tube 15 becomes deated, the inner tube 14 will provide suiticient support for the outer tube and the shoe to make it unnecessary to stop and change the shoe, certainly untila suitableplaceas a garage or repair station may bereached where this Work can be conveniently done. drawing, it maybe advisable to provide a series of staggered lugs 31 and 32 extending between the inner and outer tubes, and preferably withinthe contines ot the rim and its anges. Also as illustrated, the contact between the shoe and the road is designated at 33, 34 indicating the road bed, while the bulging portion of the tire in advance ot' its contact with the road bed is indicated at 35reierence beingmade to. Fig. 2 ci? the drawing;

Referring to Figs. 4' and 6, the tire made in accordance with my invention may be constructed to include an inner tube 36 made oi' As illustrated in the 'l rubber or other similar flexible materia-l and provided with a cover or sheath 37 of indexible material; anouterexible tube 38 adapted to contact withF the shoe and an intermediate dexible tube 39 also fitted with a cover or sheath 40 et inflexible material. 'lhese tubes like those hereinbefore described are preferably arranged concentric of one another within the shoe and within the connes xont the flanges of the rim, are vprovided with series of lugs 41 and .42 which are preferably arranged in a staggered relationship". 'lhek lugs 41 lie between the .inner tube 36l and the sheath 37 and the intermediate tube 39,while the lugs 42 lie between the outer tube 38 and the intermediate tube 39 and its cover 46., ln this form of the tire there is a space 43 withinthe inner tube which may be indated'to a predetermined pressure, orexample a pressure of'l'O to Z5.pounds; between the inner tube 36 andthe intermediate tube 39 there is an annularspace 44, which torV example may contain air or other gas to ay pressure of 55 to 6'0 pounds; while between the intermediate tube 39 and the outer tube 38'there is an an` nularspace 45 adapted to contain air or other gas at a still lower pressure, for example 45 to pounds per squareinch. ln this, form los of the tire there is therefore, a. stillgreater resilient ei'ect and this resiliency is maintained to a predetermined extent it for any reason the outer tube becomes deflated, that is if the pressure in the annular space is materially decreased, the ,outer tube and the shoe izo larly described. This armor may be employed in any one of a plurality of man, ners, for example as illustrated in Fig. 7, the armor .which is designated at .46 may be associatedwth or made as an integral part of the outer tube 38 in the formof tire shown in Fig. 4, so that the armor lies between the outerV tube 38 and the inner surface of the `l`shoe. As illustratedI in Fig. 8, the armor which is designated at 47 may be placed on the inner side of the outer tube .in the form of the tire as illustrated inFig.

3, the armor being associated with or made .an integral part of this outer tube 15. Then again'as shown in Fig. 9, the armor which 1s indicated at 48 may be placed so as to assume an approximately central position in the annular space o a tire constructed as shown in Fig. 3. In this struct-ure 'as will be apparent, the armor lies intermediate of .the outer tube 15 and the cover or sheath 17 of the inner tube 14 and is preferably provided vvith a series of lugs or projections 49- bearing against the cover or sheath 415 to maintain the armor in its position 1n the annular space 45. Then again as shown inFig.

- to and'to contactiwith the, outer ,surface of theA cover or sheath 17. .It will furthermore be lunderstood.. th'at'the villustrations shown in Figs. 7, '8, .9 and-10 are more or less dia? grammatic, andthat these or otherI variations -lll 10, the armor which is indicated at 50.may be associated with the inner tube 14 and its 30' cover or sheath 17 in the form` ofthe tire as illustrated in- Fig. 39 In this structure for examplethe armor is preferably construct-v ed so as to be. independent 'of but to conform of the manner in which the armor may -be associated with various be employed without departing y'from'the nature' and spirit of the invention.

. use and shaped t0 y.conform to the parts of the tire l.With which it maybe associated. The band or body of the armor is indicated at 51 and as shown'is provided in predetermined positions in n onesurface thereof with /series of recesses 52. In the vform of the invention asshown, these recesses extend both transversely and circumferentially o'f the body of the armor, and have the edges thereof under-v cut or beveled'. The form of t-he recesses howevenmay be varied as may -benecessary or desirable in different uses of the armor.

In any event, each of these recesses 52 fisadapted to receivea correspondingl shaped plate 53 embodied in which 'is a reinforcing.-

member 54 made of metal or` other similar substantially puncture roof material. IIn this formof the armor 't esecti'ons in which the recesses for theplat'es are formedare determined by series of indercut grooves 55,`

parte of the tiremay.

reinforced members 56, which are intermediate of the plates 53. Each of these members 56 is member 57, the extent of which is sufficient to be coincident with or to overlap the edges of the reinforcing members 54 in the adja-y centl plates 53. The ends of these members are preferably made in angular conformation as indicated at 58 and 59 Aso as to abut against each other at the intersections of the undercut grooves 55, whereby vthe entire area of the armor is reinforced so as to be substantially puncture proof. However, in order to provide against possible punctures at the intersections of the undercut grooves, I prefer to employ. additional reinforcing members prefab y in the'form 0f disks 60, which are suitably embedded inthe body of the armo-r at the intersections of these undercut grooves. This form of armor is therefore, flexible and sufficiently resilient to make the insertion of the plates v53 readily possible, it being understood that the members 56 provided with a metal reinforcing..

are made of just as resilient material as the l scribed., lInthis construction the body of the armor is indicated at 61. In one surface .\thereofthi`s .is providedvvith transversely extending series of flanges 62. These flanges are fitted with reinforcing members 63 al'nd are adapted to receive and maintain in positionnintermediately whichis fitted wit a reinforcing member 65.

y j At each o'f--the intersections of the flanges 624 As illustrated in Figs. 11, 12 and 13, the I `may provide an additional reinforcing member 66. K e

In' Fig'. .15, I have illustrated a further somewhat modified form of armor in which the`flexible and resilient body member or band is illustrated at 67. In one side of this band there is provided series of transversely extending 4ribs 68 which arepreferably un# dercut as indicated at 69; and are ada ted to receive and maintain inposition the p ates as indicated 70,- each of which is reinforced 71. On the opposite side of the body or band of the armor in this construction there are ribs 72 conforming in outline, that is the Placed lplates 64, each of' loo direction in which the run to the ribs` 68. l

In eachfof theseeribs t ere is a reinforcin mem er 73 and-atthe intersections of each o.

`thepribsthere is an additional reinforcing member 742 It will also beunderstood that while I have IhereinV shown and described various forms of armor, that other and equalobtious forms may be employed without e partingv from the nature and-spirit of the invention. f

As hereinbefore stated, the extent and configuration of the plates 53 and the members 56 and their reinforcing devices are herein illustrated only diagrammatically, as these parts may be made in many other forms and configurations. Furthermore, l wish particularly to point out that the resiliency of the armor is due not only to the material of which the body thereofis composed, but also to the construction in which the reinforcing devices of the plates 53 and the reinforcing devices of the intermediate members 56 lie in dilerent planes, so that irrespective of the extent of these reinforcing devices there is always a resilient portion of the body of the armor between their adjacent edges. Still furthermore, the disks 60 employed as additional reinforcing devices at the meeting edges or points of the intermediate members are also in a plane diderent to that in which the reinforcing devices of the plates 53 and the intermediate members lie, so that in any event, irrespective of the form and conguration of these members, the reinforcing devices lie in diderent planes, whereby there is always a portion ot the resilient body mem# ber between the said reinforcing devices. Thisas will be readily appreciated is the means of materially increasing the resiliency of the armor as a whole.

-l claim as my invention:

ln a ,vehicle tire, an expansible outer tube,

an expansible inner tube vconcentric there.

with, a substantially ineXp-ansible cover. eX- tending immediately around the exterior of, the inner t-ube to `limit the expansion thereof to a diameter appreciably smaller than the inner diameter of the outer tube providing an annular space between the tubes, means for indating the inner and outer tubes Whereby the pressure in the inner tube is appreciably greater than that in the space between the tubes, series et lugs connected to the outer tube and normally extending between the same and the inner tube and its cover to position the said inner tube and its cover, and a shoe surrounding the outer tube. Signed by me this 8th day of August, 1925.

navrn ufieoo'rn, 

